The 6330 sub module provides embedding of analog or AES audio. Analog inputs are digitized at 24 bits of resolution. Two AES inputs provide four channels of digital audio to the input selector. Sample rate converters can be selected in the AES input path, allowing the use of asynchronous digital sources. A four channel audio mixer provides level control, phase inversion and channel shuffling. The 6330 also has automatic tracking delay and bulk delay.